# Fulmen FB450 · Car battery 12V 45Ah 330A

![Fulmen FB450 · Car battery 12V 45Ah 330A](https://bateriasonline.es/2917-home_default/fulmen-fb450.jpg)

> Fulmen FB450: 45 Ah car battery, 330 A (EN), 220×135×225 mm, positive terminal on the right. Equivalent to Exide EB450 and Tudor TB450.

**Category:** [Car batteries](https://bateriasonline.es/en/car-batteries) → [Fulmen](https://bateriasonline.es/en/fulmen-batteries)

- **Canonical URL**: https://bateriasonline.es/en/fulmen-fb450
- **Language**: en
- **Brand**: Fulmen
- **Reference**: BOL-FULMEN-FB450
- **EAN**: 3661024044493
- **MPN**: FB450
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fulmen |
| Range | FULMEN Formula |
| Application | Cars |
| Technology | Lead-acid |
| Voltage | 12 V |
| Capacity | 45 Ah |
| Cold cranking amps (EN) | 330 A |
| Length | 220 mm |
| Width | 135 mm |
| Height | 225 mm |
| Weight | 12.5 kg |
| Polarity | Positive terminal on the right |

## Quick description

The Fulmen FB450 is a car battery with 12 V, 45 Ah and 330 A cold cranking current, measuring 220 × 135 × 225 mm, with the positive terminal on the right. With the positive terminal on the left, the exact counterpart is the Fulmen FB451.

## Description

## Who the Fulmen FB450 is for

The Fulmen FB450 is made for petrol and diesel cars without automatic engine stop. Its job is to start the engine in the cold with margin to spare and keep the car's electronics powered.
At 45 Ah it is a small size: the usual choice for petrol superminis and city cars with little equipment. The FB450 belongs to the Fulmen FULMEN Formula range. [The full range of Fulmen batteries](https://bateriasonline.es/en/fulmen-batteries)

## Part numbers and codes for the Fulmen FB450

Shops, garages and catalogues identify the FB450 with these codes:

| Commercial reference | FB450 |
|---|---|
| EAN | 3661024044493 |
| Not to be confused with | Fulmen FB440 (44 Ah, 400 A), Fulmen FB451 (45 Ah, 330 A, positive terminal on the left), Fulmen FB454 (45 Ah, 330 A) |

## Fulmen FB450 vs FA456, FB451 and FB320

How the FB450 compares with Fulmen batteries of similar size and capacity:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Fulmen FB450 (this one) | 45 Ah | 330 A | 220 × 135 × 225 | right | 12.5 kg |
| Fulmen FA456 | 45 Ah | 390 A | 237 × 127 × 227 | right | 11.8 kg |
| Fulmen FB451 | 45 Ah | 330 A | 220 × 135 × 225 | left | 12.5 kg |
| Fulmen FB320 | 32 Ah | 270 A | 178 × 135 × 225 | right | 9.6 kg |

- Fulmen FA456: the same capacity, 60 A more cranking power, a different case (237 × 127 × 227 mm).
- If the positive terminal of your battery is on the other side, the one you need is the Fulmen FB451 (positive terminal on the left).
- Fulmen FB320: 13 Ah less, 60 A less cranking power, a different case (178 × 135 × 225 mm).

## Equivalents and alternatives to the Fulmen FB450

Batteries that fit the FB450's tray with the same polarity; besides other conventional batteries, an EFB or AGM of this size is a valid upgrade for the FB450.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Exide EB450 | Lead-acid | 45 Ah | 330 A | 220 × 135 × 225 |
| Tudor TB450 | Lead-acid | 45 Ah | 330 A | 220 × 135 × 225 |
| Deta DB450 | Lead-acid | 45 Ah | 330 A | 220 × 135 × 225 |
| Varta B23 | Lead-acid | 45 Ah | 300 A | 220 × 135 × 225 |
| Kronobat SD-45.0T | Lead-acid | 45 Ah | 300 A | 219 × 135 × 225 |

## Inside the FB450: lead-acid technology

Inside, the FB450 is classic lead-acid: liquid electrolyte and lead plates. It is a robust, well-known technology with a good capacity-to-price ratio, and still the basis of most cars, trucks and traction equipment.

## Check this before ordering the Fulmen FB450

- If your car has Start-Stop, the FB450 is not the right one: it needs an EFB or an AGM.
- Cold cranking: 330 A (EN), equal to or higher than the original.
- Your current battery should say about 45 Ah; a little more is also fine.
- With the terminals facing you, the positive terminal of the FB450 is on the right.
- Measure the space: the FB450 takes up 220 × 135 × 225 mm.

## Frequently asked questions about the Fulmen FB450

### FB450 or FA456: which one suits me?

Compared with the FB450, the Fulmen FA456 has 60 A more cranking power. If your current battery says 390 A or more, choose the FA456; if it says 330 A or less, the FB450 is enough. Mind the space: the FA456 measures 237 × 127 × 227 mm.

### Fulmen FB450 or FB451: what is the difference?

Only the polarity: the FB450 has the positive terminal on the right and the FB451 the positive terminal on the left. Capacity (45 Ah), cranking power and dimensions are identical.

### Can the Fulmen FB450 be used in a car with Start-Stop?

No. The FB450 is a lead-acid battery for cars without automatic engine stop; Start-Stop needs an EFB or an AGM.

### How much does the Fulmen FB450 weigh?

12.5 kg, with 45 Ah of capacity. For reference, the Fulmen FA456 (45 Ah) weighs 11.8 kg.

### Which battery is equivalent to the Fulmen FB450?

With the same dimensions, polarity and similar capacity you have the Exide EB450, Tudor TB450 and Deta DB450. As the FB450 is a conventional battery, an EFB or AGM of the same size also works.

### Which charger does the Fulmen FB450 need?

An automatic lead-acid charger with cut-off or maintenance mode, rated at 10 to 20% of its capacity in amps. If it is a vented type, check the electrolyte level and top up only with distilled water.

## More batteries to compare with the FB450

- [Other car batteries](https://bateriasonline.es/en/car-batteries)
- [The whole Fulmen range](https://bateriasonline.es/en/fulmen-batteries)
- [Exide EB450](https://bateriasonline.es/en/exide-eb450) · 45 Ah, 330 A, 220×135×225 mm
- [Tudor TB450](https://bateriasonline.es/en/tudor-tb450) · 45 Ah, 330 A, 220×135×225 mm

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*bateriasonline.es — Batteries and accessories · 2026-11-10*